One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,11)(4,8)(5,14)(6,10)(7,12)(9,15)(13,16)(17,18,21,24)(19,22,26,29)(20,23,27,30)(25,31,32,28)(33,34)(35,38)(36,44)(37,41)(39,43)(40,45)(42,47)(46,48)(1,3,6,4)(2,7,10,16)(5,13,15,12)(8,14,11,9)(17,19)(18,22)(20,25)(21,26)(23,28)(24,29)(27,32)(30,31)(33,35,38,34)(36,42,46,40)(37,41,39,43)(44,45,48,47)(1,4,6,3)(2,8,10,11)(5,13,15,12)(7,14,16,9)(17,20)(18,23)(19,25)(21,27)(22,28)(24,30)(26,32)(29,31)(33,36)(34,40)(35,42)(37,45)(38,46)(39,47)(41,48)(43,44)(3,4)(7,16)(8,11)(12,13)(18,24)(22,29)(23,30)(28,31)(33,37,38,39)(34,41,35,43)(36,45,46,47)(40,48,42,44)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.